Author: Uri Blass
Date: 10:24:44 05/13/02
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On May 13, 2002 at 12:36:10, Steve Maughan wrote: >Uri, > >>It seems based on some games that I did to test Movei against Monarch that >>Monarch is relatively better at shorter time control when Movei may be better >>at longer time control. > >Could be. I really don't know how strong Monarch is but I think we're at a >similar stage in development. If the 5th Division version of Movei doesn't have >hash tables then I think the current version of Movei will probably increase to >above the strength of Monarch 2002-04c. I hope that you are right. Note that the changes relative to the version that is playing in the 5th division is also using the null move algorithm but I do not detect zunzwangs and I avoid null move pruning only in pawn endgames and in positions that the side to move has less than 10 legal moves. Note that the latest version do not use hash tables efficiently and use them only for order of moves and even it is not done efficiently(I use them for order of moves only when the score is bigger than beta and I do not use them to cut the tree). I am afraid to do changes in the search rules in the last minutes so the version that is going to play in the 4th division is probably going to use the same search rules. I may do some changes in the evaluation(Maybe better evaluation of pawn structure because Movei does not evaluate nothing about it except the knowledge that 2 pawns on the same files are bad but I am not sure if I am going to do it) If I do better evaluation of pawn structure then it is going to be evaluating weak pawns and also evaluating passed pawns in part of the cases(not always because there are cases when passed pawns are not strong(see the game hiarcs-smirin). I'm currently doing quite a significant >rewrite of the search so I doubt there will be a Monarch 2002-05, maybe a >Monarch 2002-06. If I understand correctly I understand that Monarch is not going to be updated if it promotes to the 4th division. Since Monarch is so basic I'm reasonably confident that i can >increase the strength by 300 ELO in the next twelve months but we'll have to >wait and see! I believe that you are right. I also hope to do the same with Movei. I only need average of at least 25 elo per month. Uri
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